User Manual for BPS-2000
www.levitronix.com
PL-4021-00, Rev02, DCO# 15-235
9
2.5 NPSHr Curves
Figure 8: NPSHr curve
s for “High Flow” pump head
(Measured with pump-head LPP-2000.6)
Figure 9:
NPSHr curves for “High Pressure” pump head
(Measured with pump-head LPP-2000.7)
0
2
4
6
8
10
0
5
10
15
20
25
30
35
0.0
0.2
0.4
0.6
0.8
1.0
0
20
40
60
80
100
120
140
[m]
[gpm]
[bar]
[lpm]
Specific gravity = 1 g/cm
3
Viscosity = 0.7 cP
Liquid Temp.: 40
C
NPSHr Criteria:
Minimum absolute inlet pressure where the
pump pressure is reduced to 3%
6000 rpm
5000 rpm
8000 rpm
7000 rpm
0
2
4
6
8
10
12
14
16
18
20
22
0
2
4
6
8
10
0.0
0.2
0.4
0.6
0.8
1.0
0
10
20
30
40
50
60
70
80
[gpm]
[m]
[bar]
[lpm]
Specific gravity = 1 g/cm
3
Viscosity = 0.7 cP
Liquid Temp.: 40
C
NPSHr Criteria:
Minimum absolute inlet pressure where the
pump pressure is reduced to 3%
9000 rpm
10000 rpm
8000 rpm
6000 rpm
5000 rpm
7000 rpm